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Detection of Text Regions From Digital Engineering Drawings
April 1998 (vol. 20 no. 4)
pp. 431-439

Abstract—An algorithm for text/graphics separation is presented in this paper. The basic principle of the algorithm is to erase nontext regions from mixed text and graphics engineering drawings, rather than extract text regions directly. This algorithm can be used to extract both Chinese and Western characters, dimensions, and symbols and has few limitations on the kind of engineering drawings and noise level. It is robust to text-graphics touching, text fonts, and written orientations.

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Index Terms:
Document image analysis, engineering drawings, text segmentation, pattern recognition, image processing.
Zhaoyang Lu, "Detection of Text Regions From Digital Engineering Drawings," IEEE Transactions on Pattern Analysis and Machine Intelligence, vol. 20, no. 4, pp. 431-439, April 1998, doi:10.1109/34.677283
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